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/*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "AccessibilityProgressIndicator.h"
#include "AXObjectCache.h"
#include "FloatConversion.h"
#include "HTMLMeterElement.h"
#include "HTMLNames.h"
#include "HTMLProgressElement.h"
#include "RenderMeter.h"
#include "RenderObject.h"
#include "RenderProgress.h"
namespace WebCore {
using namespace HTMLNames;
AccessibilityProgressIndicator::AccessibilityProgressIndicator(RenderProgress* renderer)
: AccessibilityRenderObject(renderer)
{
}
Ref<AccessibilityProgressIndicator> AccessibilityProgressIndicator::create(RenderProgress* renderer)
{
return adoptRef(*new AccessibilityProgressIndicator(renderer));
}
#if ENABLE(METER_ELEMENT)
AccessibilityProgressIndicator::AccessibilityProgressIndicator(RenderMeter* renderer)
: AccessibilityRenderObject(renderer)
{
}
Ref<AccessibilityProgressIndicator> AccessibilityProgressIndicator::create(RenderMeter* renderer)
{
return adoptRef(*new AccessibilityProgressIndicator(renderer));
}
#endif
bool AccessibilityProgressIndicator::computeAccessibilityIsIgnored() const
{
return accessibilityIsIgnoredByDefault();
}
String AccessibilityProgressIndicator::valueDescription() const
{
// If the author has explicitly provided a value through aria-valuetext, use it.
String description = AccessibilityRenderObject::valueDescription();
if (!description.isEmpty())
return description;
#if ENABLE(METER_ELEMENT)
if (!m_renderer->isMeter())
return String();
HTMLMeterElement* meter = meterElement();
if (!meter)
return String();
// The HTML spec encourages authors to include a textual representation of the meter's state in
// the element's contents. We'll fall back on that if there is not a more accessible alternative.
AccessibilityObject* axMeter = axObjectCache()->getOrCreate(meter);
if (is<AccessibilityNodeObject>(axMeter)) {
description = downcast<AccessibilityNodeObject>(axMeter)->accessibilityDescriptionForChildren();
if (!description.isEmpty())
return description;
}
return meter->textContent();
#endif
return String();
}
float AccessibilityProgressIndicator::valueForRange() const
{
if (!m_renderer)
return 0.0;
if (m_renderer->isProgress()) {
HTMLProgressElement* progress = progressElement();
if (progress && progress->position() >= 0)
return narrowPrecisionToFloat(progress->value());
}
#if ENABLE(METER_ELEMENT)
if (m_renderer->isMeter()) {
if (HTMLMeterElement* meter = meterElement())
return narrowPrecisionToFloat(meter->value());
}
#endif
// Indeterminate progress bar should return 0.
return 0.0;
}
float AccessibilityProgressIndicator::maxValueForRange() const
{
if (!m_renderer)
return 0.0;
if (m_renderer->isProgress()) {
if (HTMLProgressElement* progress = progressElement())
return narrowPrecisionToFloat(progress->max());
}
#if ENABLE(METER_ELEMENT)
if (m_renderer->isMeter()) {
if (HTMLMeterElement* meter = meterElement())
return narrowPrecisionToFloat(meter->max());
}
#endif
return 0.0;
}
float AccessibilityProgressIndicator::minValueForRange() const
{
if (!m_renderer)
return 0.0;
if (m_renderer->isProgress())
return 0.0;
#if ENABLE(METER_ELEMENT)
if (m_renderer->isMeter()) {
if (HTMLMeterElement* meter = meterElement())
return narrowPrecisionToFloat(meter->min());
}
#endif
return 0.0;
}
HTMLProgressElement* AccessibilityProgressIndicator::progressElement() const
{
if (!is<RenderProgress>(*m_renderer))
return nullptr;
return downcast<RenderProgress>(*m_renderer).progressElement();
}
#if ENABLE(METER_ELEMENT)
HTMLMeterElement* AccessibilityProgressIndicator::meterElement() const
{
if (!is<RenderMeter>(*m_renderer))
return nullptr;
return downcast<RenderMeter>(*m_renderer).meterElement();
}
#endif
Element* AccessibilityProgressIndicator::element() const
{
if (m_renderer->isProgress())
return progressElement();
#if ENABLE(METER_ELEMENT)
if (m_renderer->isMeter())
return meterElement();
#endif
return AccessibilityObject::element();
}
} // namespace WebCore
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